Home / 885,375.25-1,221,781.76-522,916.45

Finding the Fourth Proportional to 885,375.25, 1,221,781.76 and 522,916.45

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Solution

The fourth proportional to 885,375.25, 1,221,781.76 and 522,916.45 is: 721,603.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,375.25 : 1,221,781.76 = 522,916.45 : x
  2. Step 2: Convert to fraction form
    885,375.25/1,221,781.76 = 522,916.45/x
  3. Step 3: Cross multiply
    885,375.25x = 1,221,781.76 × 522,916.45
  4. Step 4: Simplify right side
    885,375.25x = 638,889,780,613.95
  5. Step 5: Solve for x
    x = 638,889,780,613.95/885,375.25
  6. Step 6: Final answer
    x = 721,603.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.